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Old 01-09-2015, 11:28 PM   #1
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Default brake bleeding problem

So my car has been losing brake fluid for a while. Looked for the leak and could not find. Just kept adding a little. Topped it off couple days ago and kid drove the car and it had almost no pedal. Winter up here so I looked where the car was sitting and saw quite a bit of fluid where the rear tire was sitting. Took off the wheel and could not really see a leak. Ice, snow and sand everywhere. So I cleaned it all up and filled the fluid. Bled brakes at all 4 wheels and can not get any pressure built up at any wheel or get the pedal to firm up. Did the master cylinder loose its prime. I have bled brakes many times and think I know how it is supposed to work.
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Old 01-10-2015, 12:00 AM   #2
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I would check all your lines since you said you have winter where you live. I am assuming salt is used on the roads. I live in So. CaL but see out of state vehicles all the time with corroded lines that leak with a little pin hole. Also if the vehicle has ABS there is a bleed procedure, and if you cannot find any leak anywhere pull the master cylinder off and look inside the vacuum booster.
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Old 01-10-2015, 12:06 AM   #3
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Default brake bleeding problem

There is definitely a leak at the rear wheel and I would say 90% it is the caliper. I cleaned it all up and have it inside so tomorrow I hope to see it dripping, I am just confused why I cannot get the pedal to firm up while bleeding the brakes. Normally when I bleed brakes the air or fluid squirts out. It just dribbles out like no pressure.
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Old 01-10-2015, 01:22 AM   #4
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You are not going to have good bleed pressure with a leak.
As long as no brake fluid got onto the pads, you should be able to transfer the pads over to the new caliper & continue to bleed the brakes with success.
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Old 01-11-2015, 08:30 AM   #5
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Abbby,

What state is your Bonneville in? Usually a line leak gives almost zero pedal, even with a split master cylinder. Like others have posted, inspect those lines....
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Old 01-12-2015, 02:31 PM   #6
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Default Bleeding issue

Repalced left rear caliper, bled out fine and all is good.
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Old 01-12-2015, 03:28 PM   #7
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Excellent, Good work!
Thanks for letting us know, and I am happy it was just the caliper!
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Old 01-12-2015, 11:11 PM   #8
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Must admit, I thought it was a line......have never seen a rear caliper leak on a bonny....
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